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Inventions & Di...

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  • Question 1
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    Who invented the BALLPOINT PEN?

  • Question 2
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    In which decade was the first solid state integrated circuit demonstrated?

  • Question 3
    1 / -0.25

    What J. B. Dunlop invented?

  • Question 4
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    Which scientist discovered the radioactive element radium?

  • Question 5
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    What Galileo invented?

  • Question 6
    1 / -0.25

    What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?

  • Question 7
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    When was barb wire patented?

  • Question 8
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    This statesman, politican, scholar, inventor, and one of early presidents of USA invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel.

  • Question 9
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    What James Watt invented?

  • Question 10
    1 / -0.25

    Where is the village of Branston, after which the famous pickle is named?

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